program_4_7.cpp

c++程序设计讲义 cppprograming 含源码

// Program 4.7: Computes average of a list of values
#include <iostream>
using namespace std;
int main() {
    cout << "Please enter list of numbers," << endl
    << "type Ctrl + Z to end" << endl;
    int ValuesProcessed = 0;
    float ValueSum = 0;
    float Value;
    while (cin >> Value) {
        ValueSum += Value;
        ++ValuesProcessed;
    }
    if (ValuesProcessed > 0) {
        float Average = ValueSum / ValuesProcessed;
        cout << "Average: " << Average << endl;
    }
    else
        cout << "No list to average" << endl;
    return 0;
}